77765450460 has 48 divisors (see below), whose sum is σ = 219047141376. Its totient is φ = 20613274432.

The previous prime is 77765450459. The next prime is 77765450467. The reversal of 77765450460 is 6405456777.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77765450467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3870492 + ... + 3890531.

It is an arithmetic number, because the mean of its divisors is an integer number (4563482112).

Almost surely, 2^77765450460 is an apocalyptic number.

It is an amenable number.

77765450460 is an abundant number, since it is smaller than the sum of its proper divisors (141281690916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77765450460 is a wasteful number, since it uses less digits than its factorization.

77765450460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761202 (or 7761200 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 51.

The spelling of 77765450460 in words is "seventy-seven billion, seven hundred sixty-five million, four hundred fifty thousand, four hundred sixty".